Moved XML message creation to RaceServer instead of ConnectionAcceptor.

RaceServer does not currently generate new XMLMessages - NYI.
Added a sequence number to RaceDataSource - this is used to indicate that the data source has been modified.
#story[1188]

racevisionGame/src/main/java/mock/model/RaceServer.java

@@ -1,7 +1,9 @@
 package mock.model;
 
+import network.AckSequencer;
 import network.Messages.*;
 import network.Messages.Enums.BoatLocationDeviceEnum;
+import network.Messages.Enums.XMLMessageType;
 import shared.model.Bearing;
 import shared.model.CompoundMark;
 import shared.model.Mark;
@@ -22,10 +24,29 @@ public class RaceServer {
      */
     private int boatLocationSequenceNumber = 1;
 
+    /**
+     * The sequence number of race XML messages.
+     */
+    private int raceXMLSeqNumber;
+
+    /**
+     * The sequence number of boat XML messages.
+     */
+    private int boatXMLSeqNumber;
+
+    /**
+     * The sequence number of regatta XML messages.
+     */
+    private int regattaXMLSeqNumber;
+
 
     public RaceServer(MockRace race, LatestMessages latestMessages) {
         this.race = race;
         this.latestMessages = latestMessages;
+
+        this.raceXMLSeqNumber = race.getRaceDataSource().getSequenceNumber();
+        //this.boatXMLSeqNumber = race.getBoatDataSource().getSequenceNumber();
+        //this.regattaXMLSeqNumber = race.getRegattaDataSource().getSequenceNumber();
     }
 
     /**
@@ -45,9 +66,47 @@ public class RaceServer {
         snapshotMessages.add(parseRaceStatus());
 
         latestMessages.setSnapshot(snapshotMessages);
+
+        updateXMLFiles();
     }
 
 
+    /**
+     * Checks if the race/boat/regatta data sources have changed, and if they have, update their xml representations.
+     */
+    private void updateXMLFiles() {
+        updateRaceXMLFile();
+        //updateBoatXMLFile();
+        //updateRegattaXMLFile();
+    }
+
+    /**
+     * Checks if the race data source has changed, and if it has, updates LatestMessages' race xml message.
+     */
+    private void updateRaceXMLFile() {
+        if (raceXMLSeqNumber != race.getRaceDataSource().getSequenceNumber()) {
+            //TODO generate XML string from race data source
+            String raceXMLString = "test";//TODO
+            XMLMessage message = createXMLMessage(raceXMLString, XMLMessageType.RACE);
+            latestMessages.setXMLMessage(message);
+            raceXMLSeqNumber = race.getRaceDataSource().getSequenceNumber();
+        }
+    }
+
+    /**
+     * Checks if the boat data source has changed, and if it has, updates LatestMessages' boat xml message.
+     */
+    private void updateBoatXMLFile() {
+
+    }
+
+    /**
+     * Checks if the regatta data source has changed, and if it has, updates LatestMessages' regatta xml message.
+     */
+    private void updateRegattaXMLFile() {
+
+    }
+
     /**
      * Parses an individual marker boat, and returns it.
      * @param mark The marker boat to parse.
@@ -178,4 +237,41 @@ public class RaceServer {
 
         return raceStatus;
     }
+
+
+
+
+    /**
+     * Creates an XMLMessage of a specified subtype using the xml contents string.
+     * @param xmlString The contents of the xml file.
+     * @param messageType The subtype of xml message (race, regatta, boat).
+     * @return The created XMLMessage object.
+     */
+    private XMLMessage createXMLMessage(String xmlString, XMLMessageType messageType) {
+
+        //Get the correct sequence number to use.
+        int sequenceNumber = 0;
+        if (messageType == XMLMessageType.RACE) {
+            sequenceNumber = this.raceXMLSeqNumber;
+
+        } else if (messageType == XMLMessageType.BOAT) {
+            sequenceNumber = this.boatXMLSeqNumber;
+
+        } else if (messageType == XMLMessageType.REGATTA) {
+            sequenceNumber = this.regattaXMLSeqNumber;
+
+        }
+
+        //Create the message.
+        XMLMessage message = new XMLMessage(
+                XMLMessage.currentVersionNumber,
+                AckSequencer.getNextAckNum(),
+                System.currentTimeMillis(),
+                messageType,
+                sequenceNumber,
+                xmlString);
+
+
+        return message;
+    }
 }